Breast cancer is a cancer that forms in breast cells. It usually originates through the mutation of cells in the lining of the milk ducts and lobules in the breasts. It is the most common cancer in women and it can occur in men too. There are 2 broad types of cancer; the non-invasive breast cancer and invasive breast cancer.
The exact cause remains unknown. However, it is known that cancer occurs when the breast cells begin to grow abnormally and multiply more rapidly than healthy cells. The accumulating cells form a tumour.
Thickening that feels different from surrounding tissue in other parts of the breast